Figures

Figure 1 Changes in land carbon uptake in response to increasing nitrogen deposition and both nitrogen deposition and forest regrowth. The presented values are differences in net carbon uptake modelled with and without increasing atmospheric nitrogen deposition for mature, young and middle-aged forests. The bars show global carbon uptake averaged for 1980's and 1990's.

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Figure 2 Changes in annual atmospheric nitrogen deposition based on TM3 model simulations from 1860 to 2000. Black arrows on the plot show years when forests were assumed to be planted in simulations with middle-aged and young forests.